/*
 *
 *  * Copyright (C) 2015 Square, Inc.
 *  *
 *  * Licensed under the Apache License, Version 2.0 (the "License");
 *  * you may not use this file except in compliance with the License.
 *  * You may obtain a copy of the License at
 *  *
 *  *      http://www.apache.org/licenses/LICENSE-2.0
 *  *
 *  * Unless required by applicable law or agreed to in writing, software
 *  * distributed under the License is distributed on an "AS IS" BASIS,
 *  * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 *  * See the License for the specific language governing permissions and
 *  * limitations under the License.
 *
 */
package com.lark.oapi.okio;

import java.io.IOException;
import java.util.concurrent.TimeUnit;

/**
 * A {@link Timeout} which forwards calls to another. Useful for subclassing.
 */
public class ForwardingTimeout extends Timeout {

    private Timeout delegate;

    public ForwardingTimeout(Timeout delegate) {
        if (delegate == null) {
            throw new IllegalArgumentException("delegate == null");
        }
        this.delegate = delegate;
    }

    /**
     * {@link Timeout} instance to which this instance is currently delegating.
     */
    public final Timeout delegate() {
        return delegate;
    }

    public final ForwardingTimeout setDelegate(Timeout delegate) {
        if (delegate == null) {
            throw new IllegalArgumentException("delegate == null");
        }
        this.delegate = delegate;
        return this;
    }

    @Override
    public Timeout timeout(long timeout, TimeUnit unit) {
        return delegate.timeout(timeout, unit);
    }

    @Override
    public long timeoutNanos() {
        return delegate.timeoutNanos();
    }

    @Override
    public boolean hasDeadline() {
        return delegate.hasDeadline();
    }

    @Override
    public long deadlineNanoTime() {
        return delegate.deadlineNanoTime();
    }

    @Override
    public Timeout deadlineNanoTime(long deadlineNanoTime) {
        return delegate.deadlineNanoTime(deadlineNanoTime);
    }

    @Override
    public Timeout clearTimeout() {
        return delegate.clearTimeout();
    }

    @Override
    public Timeout clearDeadline() {
        return delegate.clearDeadline();
    }

    @Override
    public void throwIfReached() throws IOException {
        delegate.throwIfReached();
    }
}
